Instrument for administering medicines to animals



Afig. 7, v192s. 1,679,391

. N. AAS

. INSTRUMENT FOR ADMINISTERING MEDICINES TO ANIMALS Filed Sgpt. 5, 1927Patented Aug. 7, 1928.

UNITED. STATES NIIiS AAS, F SKARNES, NORWAY.

INSTRUMENT FOR ADMINISTERING MEDICINES T0 ANIMALS.

Application filed September 3, 1927, Serial No. 217,471, and in GermanyFebruary 16, 1927.

This invention has for its object an instrument for administeringmedicines or food to horses and other animals.

This instrument. comprises a container of metal or other rigid materialfor the solid, liquid or pasty medicines or food to be administered, apiston movable in said container, an operating rod on said piston, arigid tubular extension on the said container enclosing the piston rodand a handle on the piston rod.

An important feature of this instrument consists therein that the bottomof the container encircling the piston rod has a conical cavity intowhich fits a conical projection on the underside of the piston. Theeffect of this arrangement is to prevent liquid material passing fromthe container through possible passages between piston and containerwall from flowing into the tubular extension when the piston is in thebottom position in the container.

Another important feature consists therein that the length of the pistonrod and the handle on same is so proportioned in relation to the tubularextension on the container that the handle extends outside of the saidtube when the piston is in the top position.

The purpose of the arrangement is to make so the instrument as short aspossible so that it can be conveniently carried.

Other important features of the invention will be explained in thefollowing description with reference to the accompanying drawing.

An embodiment of the invention is illustrated in the drawing.

Fig. 1 is a longitudinal sectional View of the instrument. Figs. 2 and 3are sectional views of structional details.

In the illustrated example 1 is the medicine container, 2 is the pistonslidably arranged therein, 3 is the piston rod and 4 is the handle ofthe instrument constituting a widened extension of the rod. The tubularguide sleeve 5 is at the inner end conically widened so as to form aseat for the conically shaped inner end 7 of the piston rod. The tubehas a hole 8 through which cleansing liquid can be introduced.

The piston 2 can be secured in its bottom position when the cone 7 fitstight into the seat 6 by means of a wedge 9 inserted through the hole 10in the rod 4.

When the instrument is used the piston is placed in the bottom position(Fig. 3) and the wedge 9 inserted. The medicine is poured into thecontainer 1.

The operator catches the rod 4 and inserts the container into the mouthof the animal. T hen he removes the wedge and pulls the rod until itstops. the container and the liquid is poured into the throat of theanimal.

The length of the tube 5 is so proportioned that when the instrument hasbeen introduced into the mouth to the root of the tongue only a verysmall portion (for example about 2 cm.) projects out from between thefront teeth of the animal.

The entire length of the instrument is when constructed as described foruse for horses only about 40 centimeters, so that it can be convenientlycarried in an ordinary instrument bag.

The apparatus is suitably made of aluminum but also other rigidmaterials may be used. When the apparatus is constructed as abovedescribed, it is not necessary to fit the piston completely tight in thecontainer by grinding because the cone 7 placed in the seat 6 will makea sulficiently tight seal in the period before theinstrument has beenplaced in the mouth of the animal. The emptying of the medicine into themouth of the animal is effected in such a short time that the quantityof liquid leaking between the piston and the cylinder wall if any willbe quite small.

Claims;

1. An instrument for administering solid as well as liquid medicine andfood to horses and other animals, comprising a tubular metal medicinecontainer provided with a conical seat on one end thereof, a tubularmetal guide extending from said container and communicating therewith, apiston slidably arranged in said container, said piston having a conicalprojection on one face thereof adapted to fit into said conical seatwhen said piston is at one end of said container, a rod on said pistonfreely slidable in said guide, and an operating handle on the outer endof said piston rod.

The piston moves forward in 2. An instrument as set forth in claim 1 3.An instrument as set forth in claim 1 characterized by the provision ofa piston characterized by the provision of a tubular rod having a slotat a point in the length guide having an opening in the wall thereofthereof located beyond the extremity of said for the introduction of acleansing agent.

5 tubular guide when said piston is positioned In testimony whereof Ihave signed my on the conical seat, said slot being adapted name to thisspecification. for the insertion of a wedge for locking the rod andpiston in fixed position. 7 NILS AAS.

